74LS192 Decade Up/Down Counter with Clear
Package SOIC Series 74LS
74LS192 overview
The 74LS series of integrated circuits (ICs) was one of the most popular logic families of transistor-transistor logic (TTL) logic chips. 74LS series is a bipolar, low-power Schottky IC.The 74LS192 is a UP/DOWN BCD Decade (8421) Counter. 74LS192 Counts Up and Count Down Clocks are used and in either counting mode the circuits operate synchronously
Key specifications
Supply Voltage
4.75 - 5.25Vdc
Maximum Clock Frequency
40Mhz
Power Dissipation
2mW/gate @100kHz
Minimum Output Current
8mA
Propagation Delay
10nS
Fan Out (TTL Loads)
20
Datasheet
192.pdf
74LS192 features
- Synchronous Up/Down BCD Decade Counter, Count is Updated with Low-to-High Clock Transition
- Synchronous Counting
- High Speed up to 25MHz
- Individual Preset Inputs
- Standard TTL Switching Voltages
74LS192 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | P1 | Parallel Data Input |
| 2 | Q1 | Flip-Flop Output |
| 3 | Q0 | Flip-Flop Output |
| 4 | CPD | Count Down Clock Pulse Input |
| 5 | CPU | Count Up Clock Pulse Input |
| 6 | Q2 | Flip-Flop Output |
| 7 | Q3 | Flip-Flop Output |
| 8 | GND | Ground |
| 9 | P3 | Parallel Data Input |
| 10 | P2 | Parallel Data Input |
| 11 | PL' | Asynchronous Parallel Load (Active LOW) Input |
| 12 | TCU' | Terminal Count-Up (Carry) Output |
| 13 | TCD' | Terminal Count Down (Borrow) Output |
| 14 | MR | Asynchronous Master Reset (Clear) Input |
| 15 | P0 | Parallel Data Input |
| 16 | VCC | Positive Supply |
74LS192 applications
- Self-reversing counter.
- Clock divider circuit
More about 74LS192
74LS192 Alternative Equivalent
74LS193
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